Cremation-furnace.



L. F. MOORE.

CREMATION FURNACE.

APPLICATION FILED NOV. 14, 1914.

Patented May 9, 1916.

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L. F. MOORE.

CREMATION FURNACE.

APPLICATION FILED NOV. 14.1914.

1 1 82, 1 95 Patented May 9, 1916.

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WITNESSES: F, MOORE.

b A ATTORNEYS.

nawanncn F. MOORE, or rmnmom', CALIFORNIA.

CREMATION-FUKNACE.

1 1 Specification of Letters Patent.

Patented May 9, 1916.

Application filed November 14, 1914. Serial 110. 872,106.

To all whom it may concern:

Be it known that I, LAWRENCE F. Moons, a citizen of the United States, and a resident of Piedmont, county of Alameda, and

are used for the cremation of bodies.

An object of the invention is to provide a practical oil burning cremation furnace.

Another object of the invention is to provide a cremation furnace in which .the molten metal from the casket is separately collected. 7

A further object of the invention is to provide means for controlling the combus tion in the incinerating chamber. v

The invention possesses other 'advantageous features, some of which, with the foregoing, will be set forth in the following description where I shall outline in full that form of the invention which I have selected for illustration in the drawings accompanying and forming'part of the present specification. In said drawings, I have shown only One specific form of my generic invention, but it is to be understood that I do not limit myself to such form, because my invention may be embodied in a multiplicity of forms, each being a species of my said invention.

It is also to be understood that by the claims succeeding the description of my invention, I desire to cover the invention in whatever form it may be embodied. 7 Referring to said drawings: Figure 1 is a longitudinal vertical section of the furnace, part thereof being broken away. Fig. 2 is a cross section of thefurnace taken on the line A-A Fig. 1. Fig. 3 is a longitudinal horizontal section of the furnace with the floor of the incinerating chamber removed, taken on the line BB Fig. 1. Fig. 4 is a similar section with the floor in place. Fig. 5 is a cross section taken on the line C-C Fig. 1. Fig. 6 is a rear view of the furnace. I

The furnace consists of a structure of brick or other fire and heat resisting materials having a top 2 and side walls 3 of suitable thickness. Within the furnace and preferably extending therethrough from end to end is a cremation chamber, or retort 4 I to the rear of the chamber.

slot is centrally arranged in the floor and for the reception of the body and casket. The retort chamber is provided at its front and rear ends with doors 5-6, the door 5 being preferably suspended and being of such size that when open the casket may be placed in the chamber. The cremation chamber is provided with a fioor 7, which slopes downward toward the longitudinal center line of the floor. Formed in the floor 7 at the forward end is a longitudinal slot 8, through which heat, flame and gases of combustion enter the chamber. This slot 8 extends backward for a portion of the length of the chamber and there meets a narrow longitudinal slot 9; which extends This narrow the molten metal from the casket handles and decorations which occur at this part of the chamber, flow through this slot and are collected below. The casket is longer than the wide slot 8, so that a portion of the metal falls through slot 8. and a portion through slot 9. The slope of the floor also tends to keep the casket and body in the center of the chamber.

From the cremation chamber the smoke and gases of cremation pass underthe arch 12 at the rear of the chamber and through the passage 13 into the secondary or combustion chamber 14, wherein the smoke is largely consumed, and thence pass out through the flue 15. The flames and heat from the fire enter the cremation chamber adjacent the forward end and sweep back around the body, so that the full efiiciency of the fire may be obtained, and partly for this reason the wide slot 8 is placedtoward the" forward end of the chamber.

Below the floor 7 are nre chambers 1617, preferably one on each side of the furnace. Each fire chamber is provided with an oil burner, when oil fuel is employed, and each is closed by a door 18. Between the fire chambers and separated therefrom by the walls 19 is a chamber 21 having a rearwardly sloping bottom 22. The ashes and metal from the incinerating chamber fall onto the bottom 22 and the metal flows to the lower end, at which point the chamber is closed by a door 24. The ashes may be raked from the chamber after the cremation is complete. The walls 19 are provided at their forward ends with passages 25 through which the heat and flames from the fire chambers pass to the slot 8 and hence into the cremation chamber.

Often the condition of combustion in the cremation chamber is such that a large amount of smoke is produced, and for reasons of sentiment it is not desirable to have a very great amount of smoke discharge from the flue or chimnev. To prevent the discharge of smoke, I provide a slot 26 at the rear end of the floor, which establishes communication between the cremation chamber and the fire chambers. By opening the doors 18, air is permitted to pass through the slot 26 and mix with the smoke coming from' the cremation chamber, with the re sult that the smoke is in a large measure consumed.

l/Vhen oil is used as fuel, it is necessary that the passage for the flame and gases of combustion be kept open, because when the draft is not present the oil will not burn properly. Should the passage through the slot 8 be obstructed, the oil flame will be inefficient and very smudgy, producing large volumes of smoke, and perhaps the flame would be extinguished. To prevent this I provide passages 27 in the side walls of the furnace, connecting the fire chambers with the cremation chamber, through which the flames may pass when the slot becomes clogged. These passages are arranged adjacent the front end of the furnace, so that the heat and flame entering therethrough sweep over the body.

A similar result may be obtained by providing a transverse slot 28 connecting the frontends of the cremation and fire cham bers, or both the passages 27 and the slot 28 may be employed when desired. These bypasses, as they may be termed, render the .furnace practical for the use of oil fuel.

Whether the heat passes through the slot 8 or through the by-passes, it attacks the body, although the heat is more efiicient when it enters through the slot.

I claim:

1. A cremation furnace comprising a cremation chamber, having an exit flue at the rear thereof, a floor for said chamber, a fire chamber below said floor, said floor being provided at its forward portion with a longitudinal slot through which heat passes from the fire chamber into the cremation chamber, and at its rear portion with a narrower longitudinal slot through which the molten metal from the casket discharges.

2. A cremation furnace comprising a cremation chamber, having an exit flue at the rear thereof, a floor for said chamber which slopes downwardly toward the longitudinal center line of the floor, a fire chamber below said floor, said floor being provided with a slot at the end opposite said exit flue through which the heat passes intothe cremation chamber, and with a longitudinally disposed centrally arranged slot through which the molten metal from the casket discharges.

3. A cremation furnace comprising a cremation chamber, having an exit flue leading from,the rear thereof, a floor for saidrchamher, a fire chamber below said floor, said floor being provided with a longitudinal slot at the opposite end from said exit flue through which the heat passes into the cremation chamber, and with a narrow longitudinal slot through which the molten metal from the casket discharges, and a chamber arranged below said slot.

4. A cremation furnacecomprising a cremation chamber, having an exit flue at the rear thereof, a floor for said chamber, a fire chamber below said floor, said floor being provided at its forward portion with a longitudinally disposed slot communicating with said fire chamber, and at its rear portion with a narrower longitudinally disposed slot through which the molten metal from the casket discharges, a chamber below said slots and an inclined floor for said last named chamber,

5. A cremation furnace comprising a cremation chamber, a floor for said chamber, a fire chamber below said floor, said floor being provided at its forward end with a longitudinal slot communicating with said fire chamber, and at its rear portion with a narrower longitudinal slot joining said first slot, and an exit flue leading from the rear end of the chamber.

6. A cremation furnace comprising a cremation chamber, having an exit flue at the rear thereof, a floor for said chamber sloping downwardly toward the longitudinal center line thereof, a fire chamber below said floor, said floor being provided' at its forward portion wi'th a centrally arranged longitudinal slot communicating with said fire chamber, and at its rear portion with a centrally arranged longitudinal narrower slot, and a chamber having an inclined bottom arranged below said slots.

7. A cremation furnace comprising a cremation chamber, a floor for 'said chamber, a fire chain i er below said floor, said floor being provided at its forward portion with alongitudinally arranged slot communicating with said fire chamber and at its rear portion with a narrower longitudinal slot Joining said first slot, an exit flue leading from the rear end of the cremation chamber, and an arch partly separating said chamber and flue.

8. A cremation furnace comprising a cremation chamber, having an exit flue at the rear thereof, a floor for said chamber, a fire chamber below said floor, said floor being provided at its forward portion with a longitudinally disposed slot communicating with said fire chamber and at its rear portion with a narrower longitudinal slot joining said first slot, and an auxiliary passage connecting the fire chamber and the forward portion of the cremation chamber.

t). A cremation furnace comprising a cre mation chamber, a floor for said chamber, a lire chamber below said floor, said floor being provided at its forward portion with a longitudinal slot communicating with said tire chamber and at its rear portion with a narrower longitudinal slot through which the metal from the casket discharges, an auxiliary passage connecting the fire chamber with the forward portion of the cremation chamber, and an exit flue leading from the rear end of the cremation chamber.

10. A cremation furnace comprising a cremation chamber, a floor for said chamber having a longitudinally disposed slot in its forward portion and a narrower longitudinally disposed slot in its rear portion, a fire chamber below said floor, a passage connecting the fire chamber with the slot in the said forward portion of the cremation chamher, an exit flue leading from the rear end of the cremation chamber. and a combustion chamber into which said flue leads.

In testimony whereof, I have hereunto set my hand at Oakland, California, this 28th day of October, 1914 LAWRENCE F. MOORE.

In presence of TERESINA BURGER, L. F. \VINGHELL, J r. 

